Re:HCl & residual chloride
>Can you say more about the problem of residual chlorides? I am one of
>those fishkeepers who adds salt to my tank--1 tblsp/5 gallons. What
>happens to the chloride there? I don't know the chemical terms but
>get the impression from some chemist friends that residual chloride
>should be harmless ... TIA.
Chloride IS harmless. In the case of adding HCl to your tank, the
extra Cl should only be a few ppm. Even in your case, the amount of
chloride would only be
1 tblsp=~10 grams NaCl
5 gallons=18.9 liters
10 g NaCl/18.9 liters=529 ppm NaCl, or 321 ppm Cl and 208 ppm Na
(based on its molecular weight; golly I hope I calculated this right!)
Marine organisms are exposed to much higher levels of chloride with no
ill effect. Have no fear.